package com.itheima.reggie.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.itheima.reggie.common.CustomException;
import com.itheima.reggie.mapper.CategoryMapper;
import com.itheima.reggie.pojo.Category;
import com.itheima.reggie.pojo.Dish;
import com.itheima.reggie.pojo.Setmeal;
import com.itheima.reggie.service.CategoryService;
import com.itheima.reggie.service.DishService;
import com.itheima.reggie.service.SetMealService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.Set;

@Service
@Slf4j
public class CategoryServiceImpl extends ServiceImpl<CategoryMapper, Category> implements CategoryService {
    @Autowired
    private DishService dishService;
    @Autowired
    private SetMealService setMealService;
    @Override
    public void remove(Long id) {
//      查询当前分类是否关联了菜品，如果已关联，则抛出一个业务异常
        LambdaQueryWrapper<Dish> lqw=new LambdaQueryWrapper<>();
//        根据分类id进行查询
        lqw.eq(Dish::getCategoryId,id);
        int count1 = dishService.count(lqw);
        log.info("count1:{}",count1);
        if(count1>0){
            throw new CustomException("当前分类下关联了菜品，不能删除");
        }
//       查询当前分类是否关联了套餐，如果已关联，则抛出一个业务异常
        LambdaQueryWrapper<Setmeal> lqw1=new LambdaQueryWrapper<>();
//       根据分类id进行查询
        lqw1.eq(Setmeal::getCategoryId,id);
        int count2 = setMealService.count(lqw1);
        log.info("count2:{}",count2);
        if(count2>0){
            throw new CustomException("当前分类下关联了套餐，不能删除");
        }
        removeById(id);
    }
}
